... eruptions occur at convergent plate boundaries and have mainly rhyolitic and andesitic magma. They are high viscosity, low temperature and high pressure eruptions which eject gas, dust, ash, lava bombs and tephra. The eruptions are infrequent
Explosive
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Landforms which are created by ... eruptions include: Calderas and Cone Volcanoes
Explosive
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... eruptions occur at divergent plate boundaries and have mainly basaltic and andesitic magma. The eruptions are low viscosity, reduced pressure and long flowing lava flows which produce gas, basaltic magma and lava flows. Frequent eruptions
Effusive
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Landforms which are created by ... eruptions include: Lava Plateau and Shield Volcanoes
Effusive
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... are where volcanoes erupt but not at plate boundaries. It is a fixed area of intense volcanic activity where magma from a rising mantle plume reaches the Earths surface. The stationary plume of magma rises from deep within the asthenosphere.
Hotspots
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There are different types of ... including: Calderas, Shield ... , or Cone ... (also known as strato...)
Volcanoes
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Types of Volcano: ... form with explosive eruptions because the eruption empties the magma chamber and destroys the cone. Sides of the volcano used the chamber as a support but with no support, they collapse and form a ... They are volcanic craters
Caldera
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Types of Volcano: ... is when there is an effusive eruption and vast areas are covered by free-flowing lava because the lava is basaltic and runny. When this happens, they are known as flood basalts. The lava flows and continues to erupt
Lava Plateau
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Types of volcano: ... form where the eruptions are effusive because the lava flow is quick, so spreads out over large areas. These volcanoes have gently sloping sides, and some can be wide because the lava flows a long way before cooling
Shield Volcanoes
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Types of volcano: ... are also known as stratovolcanoes, and are made up of layers of ash and lava. Explosive eruptions produce large quantities of ash which settles in-between lava. They are dominated by viscous magma and are internally constructed
Cone Volcanoes
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The ... index is measured by magnitude and intensity. It combines magnitude and intensity into one number ranging from 0 (least explosive) to 8 (most explosive). Each increase in number is 10 times bigger than the last. Its not as useful for effusive
Volcanic explosivity
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Other cards in this set
Card 2
Front
Landforms which are created by ... eruptions include: Calderas and Cone Volcanoes
Back
Explosive
Card 3
Front
... eruptions occur at divergent plate boundaries and have mainly basaltic and andesitic magma. The eruptions are low viscosity, reduced pressure and long flowing lava flows which produce gas, basaltic magma and lava flows. Frequent eruptions
Back
Card 4
Front
Landforms which are created by ... eruptions include: Lava Plateau and Shield Volcanoes
Back
Card 5
Front
... are where volcanoes erupt but not at plate boundaries. It is a fixed area of intense volcanic activity where magma from a rising mantle plume reaches the Earths surface. The stationary plume of magma rises from deep within the asthenosphere.
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